Protractor with movable arm



FIG. 1 is a perspective view of a protractor with a movable arm according to the present invention;

FIG. 2 is a front view of the protractor of FIG. 1;

FIG. 3 is an end view of the protractor of FIG. 1;

FIG. 4 is a side view of the protractor of FIG. 1; and,

FIG. 5 is a rear view, opposite the view of FIG. 2, of the protractor of FIG. 1. 

The ornamental design for protractor with movable arm, as shown and described. 